GB/T 42164-2022皮革化学试验热老化条件下六价铬含量的测定国家标准
英文:Leather—Chemical tests—Thermal ageing of leather and determination of hexavalent chromium GB/T 42164-2022介绍: 国家标准《皮革 ...
英文:Leather—Chemical tests—Thermal ageing of leather and determination of hexavalent chromium GB/T 42164-2022介绍: 国家标准《皮革 ...